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Table 1 The number of children and their BMI stratified by age and sex

From: Dental caries is negatively correlated with body mass index among 7-9 years old children in Guangzhou, China

Age(y) BMI (Mean ± SD)
N Boys N Girls N Overall
7 5892 15.7 ± 2.1 4825 14.9 ± 1.7 10717 15.4 ± 2.0
8 5942 16.3 ± 2.5 5060 15.4 ± 2.1 11002 15.9 ± 2.4
9 5849 16.9 ± 2.9 4893 16.0 ± 2.4 10742 16.5 ± 2.7
Overall 17683 16.3 ± 2.6 14778 15.4 ± 2.1 32461 15.9 ± 2.4
  1. BMI: body mass index; SD: standard deviation